ctdb-pmda: Use modified API in pcp library 4.0
Support backward compatibility by checking for __pmID_int type, which
was previously in <pcp/impl.h>. In the new version, this type is not
defined anymore and there is no need to include <pcp/impl.h>.
Signed-off-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Martin Schwenke <martin@meltin.net>
Autobuild-User(master): Martin Schwenke <martins@samba.org>
Autobuild-Date(master): Fri Mar 2 00:38:52 CET 2018 on sn-devel-144
(cherry picked from commit
426e4a5a20cff73a80d80b46f15826deac3f934f)